RS52190B - HIGH BITUMEN PACKAGING TANK - Google Patents

Abstract

The high-volume bitumen packing tank, which is made of a fabric of flexible material and before filling has the basic shape of an approximate appearance of a fringed pyramid, the tank being closed on the upper side by a side parallel to the bottom surface of the tank. central filling opening, where the fabric of the sides of the walls (1,2,3,4,5,6) in the temperature range from 100 ° to 110 ° C has the ability to stretch from 10 - 25%, preferably 15 -20% in the direction of the thread and wefts, wherein the stabilizing means (14), such as folds, seams, strips or the like, are tightened or sewn in the lower part of the fabric lining to form side walls (1,2,3,4) in order to stabilize the knitted fabric from forces which appear transversely on the thread and weft. The application contains 4 more patent claims.

Description

[0001] The invention relates to a tank with a large volume for packing bitumen, which is made of a fabric of flexible material and before filling has a basic shape of an approximate appearance of a rounded pyramid, wherein the tank is closed on the upper side by a side, which is parallel to the surface of the bottom of the tank, and which preferably has a filling hole in the middle.

[0002] From American patent documents US 2,507,939 A, US 2,674,287 A and US 2,638,951 A, packaging tanks of this type arise, whereby these known versions are collapsible portable water tanks, which are intended for transporting large amounts of water or similar liquids. This is only about liquid packaging tanks.

[0003] French document FR 2675784 A1 and Dutch document NL 8401274 A similarly describe packing tanks of the type described in the introductory part which were developed especially for the transfer of bitumen.

[0004] It is difficult to work with bitumen as a filling material, because it is a material that is melted and which at higher temperatures is liquid up to a viscous state, while at lower temperatures it hardens. Solidified molten materials have the property that even at low temperatures they are not completely solid. At ambient temperatures, bitumen shows a strong cohesiveness ("stickiness"), and it also has very little internal friction, so in a cooled state it behaves as a mass that flows very slowly. If bitumen is poured into a tank that does not have stable dimensions, then this bitumen softens during transport or storage due to its creeping properties (slow flow), which greatly complicates the storage of such tanks or even makes it impossible. That is why bitumen was stored in barrels or, for smaller packages, packed in cartons or in plastic foils, which as such are dimensionally stable vessels.

[0005] The task of the invention would therefore be to realize a tank for packaging of a large volume, which would be of the aforementioned type and which is self-stabilizing during filling with liquid bitumen, and even when the bitumen solidifies, it will remain free to stand when loaded from above.

[0006] According to the invention, this task is solved in such a way that the fabric that shapes the walls in the temperature range from 100°C to 110°C has the ability to stretch from 10% to 25% preferably 15% to 20% in the direction of the threads and the weft in the basis of the textile, whereby stabilizing means, such as making folds, or sewing strips, or making similar seams are usually carried out in the lower area of the fabric covering forming the side walls in order to of stabilizing the knitted fabric to the forces occurring transversely on the warp weft. Thus, the concrete that makes up the walls can stretch within previously determined limits due to the temperature of the poured bitumen, which leads to a certain swelling of the tank. In order for this bulging of the tank not to be large and to prevent the walls from cracking during storage of these tanks, stabilizing agents are inserted into the lining of the fabric that forms the side walls of the tank. The stability or prevention of unwanted tank inflation is also important because these containers are stored in the so-called "ISO-containers". These "ISO containers" are also called "TEU" internationally, which means the so-called. "Twenty Feet Equivalent Unit". In these "containers, two tanks are placed on the bottom, side by side, and the next two tanks are then placed on top of these two tanks. It should be avoided that due to the large swelling of the tanks, they get stuck or stick, which would make it difficult or even completely impossible to empty, i.e. take these tanks out of the container.

[0007] One such special inner tank made of plastic stable at temperatures of about 100°C to 105°C with a melting point of about 130°C to 150°C is preferably used. In this way, it is prevented that the bitumen remains stuck to the container and cannot be removed from the tank and sent to the place of application. Due to its melting point, the inner tank is soluble during the application of bitumen, and due to the small amount of material of the inner tank in relation to the total mass of bitumen contained in the tank, no change in the quality of the bitumen should be expected.

[0008] Preferably, stabilization means can be provided in the lower half, most preferably in the lower third of the height of the tank.

[0009] Bloating can be particularly effectively prevented with these ratios, since they are

[0010] means for stabilization applied precisely in the areas of greatest swelling. The fabric from which the walls are made can be further stabilized by coating, which particularly effectively prevents the ability to stretch and deform due to forces occurring transversely on the thread and weft.

[0011] In order to facilitate the filling of the sitting side, as well as for the firm suspension of the tank inside the cargo tank on the other side, two corner seams on the walls, which are located close to each other, can be connected with strips that extend roughly parallel to each other.

[0012] One embodiment of the invention is shown schematically in the drawings.

Figure 1 shows the appearance of the tank den Verpackungsbehalter.

Figure 2 is a section along the line II - II

[0013] The packing tank is made in the form of a hemmed conical compartment of four side walls 1, 2, 3, 4, trapezoidal shape, bottom 5 and upper surface 6, whereby the side walls 1,2,3,4 are connected to each other by seams 7, the lower edges of the side walls are connected to the bottom by seams 8 and the upper edges of the side walls are connected to the upper surface 6 by seams 9. the surface 6 has a filling opening 10 through which the inner lining 11 rises, which can be closed by means of a tape 11' or the like.

[0014] The slope of the side walls towards the bottom (see figure 2, side wall 2 and bottom 5) is, as shown by the angle a, between 70° and 85°, preferably between 75° and 83°. As already mentioned, this leads, on the one hand, to the optimization of the filling volume, and on the other hand, to the appropriate ability to just stand up, because when the tank is tilted, the bottom 5 partially rises from the surface on which it is placed, and then, due to the internal pressure of the bitumen filling, the part of the bottom that has risen is pressed down towards the surface on which it stands, and, based on the tension-tight connection over the side walls (2, 4 according to the figure) and the upper surface 6 the opposite side wall 2 is raised so that a stable structure is achieved. Along the seams 7, 8, 9, the edges of the adjacent walls, which join each other, are hemmed and in the upper part of the seam 7, straps 13 are sewn for carrying, which creates a very stable loop. In the lower halves of the side walls 1 - 4, means14 for stabilization were applied. These stabilizing means can be sewn folds, seams as well as sewn or. woven tapes or the like. Stabilizing means 14 extend transversely from the corner areas upwards towards the oppositely placed corner seams 7, whereby in the example in question, two stabilizing means 14 are provided for each knitted fabric, which cross each other in relation to each other.

A

[0015] Straps 13 which are sewn along the side edges are shaped as handles 13' for carrying, whereby two handles are provided to extend approximately parallel to each other, whereby handles 13' can be used not only for lifting with a forklift, but also for securing the tank inside a standard container. This results, as mentioned earlier, in a frame that is overall stable tensile strength for the tank walls placed within it.

[0016] Figure 2 shows how the separate inner tank 11 is inserted into the packing tank, where it is important that the inner tank is at least in the area of the seams 8 connected to the walls of the packing tank in order to prevent inward bending or other deformation of the inner tank, which prevents the possibility of the inner tank being completely filled.

[0017] The packaging tank in question is intended for filling with liquid or viscous or. creeping materials such as bitumen, where it was found that due to its overall design, the tank has a high degree of self-stabilization.

Claims (5)

1. A large-volume tank for packing bitumen, which is made of a fabric of flexible material and before filling has a basic shape of an approximate appearance of a hemmed pyramid, wherein the tank is closed on the upper side by a side, which is parallel to the surface of the bottom of the tank, and which preferably has a central opening for filling in the middle, wherein the fabric of the side walls (1,2,3,4,5,6) in the temperature range of 100° to 110°C has the ability to stretch from 10- 25%, primarily 15 - 20% in the direction of the thread and weft, whereby the means (14) for stabilization, such as folds, seams, tapes or the like are tightened or sewn in the lower part of the lining of the fabric forming the side walls (1,2,3,4) in order to stabilize the knitted fabric from the forces occurring transversely on the thread and weft. 2. Packaging tank, according to claim 1, characterized by the fact that a special inner tank (11) made of plastic stable up to about 100 - 105°C with a melting point of approximately 130 - 150°C is inserted. 3. Packaging tank, according to claim 1 or 2, indicated, which is provided in the lower half of the stabilizing means (14), preferably in the lower third of the height of the tank. 4. Packaging tank, according to claims 1 to 3, characterized in that the fabric from which the sides of the walls (1,2,3,4,5,6) are formed is stabilized by the application of a lining. 5. A packaging container according to one of claims 1 to 4, characterized in that two side-by-side corner seams (7) of the side walls (1,2,3,4) are connected by strips (13') extending almost parallel to each other.